The Houston Astros' 2011 season was the 50th season for the franchise in the National League in Houston, their 47th as the Astros and their 12th season at Minute Maid Park. The 2011 Astros became the first team in the franchise's 50-year history to lose 100 games in a single season.
Note: G=Games played; AB=At bats; R=Runs scored; H=Hits; 2B=Doubles; 3B=Triples; HR=Home runs; RBI=Runs batted in; BB=Base on balls; SO=Strikeouts; SB=Stolen bases; AVG=Batting average
x Was not part of the team at end of the season
Note: W=Wins; L=Losses; ERA=Earned run average; G=Games pitched; GS=Games started; SV=Saves; IP=Innings pitched; H=Hits allowed; R=Runs allowed; ER=Earned runs allowed; HR=Home runs allowed; BB=Walks allowed; SO=Strikeouts